1269278 (1) 九、發明說明 【發明所屬之技術領域】 本發明係有關對光碟記錄或再生資訊的光碟裝置，尤 其有關其薄型化技術。 【先前技術】 作爲有關本發明之先前技術而記載於文件中者，例如 φ 有日本特開2002_352497號公報或日本特開2004-39198 號公報所記載者。日本特開2002-3 52497號公報中，記載 了作爲小型•薄型之碟片裝置，藉由移動機構使旋轉檯對 設置於上部殼體之碰觸構件側做相對移動，將碟片面推碰 至該碰觸構件的面，藉此將碟片保持機構插入碟片中心孔 內，成爲將該碟片以放置在旋轉檯上之狀態來保持（夾持 )的構造；日本特開2004-3 9 1 98號公報中，作爲碟片驅 動裝置之夾持機構，記載有具備旋轉檯之碟片轉軸部可對 φ 碟片接觸離開，使該碟片轉軸部對光碟接近，藉由將該碟 片推壓至上部匣之推壓反作用力，成爲將該碟片夾持於旋 轉檯的構造。 【發明內容】 上述先前技術之任一個’在夾持碟片時’插入碟片之 中心孔之部分（鉗部）的前端面，都未從蓋構件（頂蓋構 件）之外側平面之高度位置突出，而是在比該高度位置更 低的位置，故插入碟片中心孔之部分（鉗部）之前端面的 -5- 1269278 ， (2) 高度只要不減少，蓋構件之高度尺寸的減少化就很困難， 而難有裝置整體的薄型化。減少插入碟片中心孔之部分（ 鉗部）之前端面的高度，則關聯到該插入動作困難等妨礙 確實夾持碟片的情事。 本發明之課題點，係有鑑於上述先前技術之情況，針 對例如吸入式（Slot in type，將作爲記錄媒體之碟片單體 ，不使用托盤或匣而直接插入裝置內的形式）等之光碟裝 # 置中，即使讓頂蓋構件之平面部之高度位置較低，亦可對 光碟確保特定之夾持，而謀求裝置之薄型化。 本發明之目的，係解決該課題點，提供例如裝置厚度 在9.5xl(T3Cm以下的光碟裝置。 爲了解決上述課題點，本發明係針對光碟裝置，在光 碟之夾持時，在使光碟碰觸頂蓋構件之相對面的狀態中， 插入光碟中心孔內之突起狀之鉗部的前端面，係從該頂蓋 構件之貫通孔突出，成爲比碟片平面範圍內之該頂蓋構件 •之平面部高度位置更高的構造。 【實施方式】 以下使用圖示，說明用以實施本發明之最佳方式。 第1圖〜第3圖，係本發明之一實施方式的說明圖。 第1圖，係作爲本發明之一實施方式，吸入式光碟裝置的 構造例圖，爲表示將頂蓋構件取下之狀態的立體圖；第2 圖’係第1圖之光碟裝置之內部構造的俯視圖；第3圖， 係第1圖之光碟裝置中，光碟之夾持的說明圖。 -6- (3) 1269278 第1圖中，1爲光碟裝置；2爲使光碟（未圖示）旋 轉之碟片馬達；3爲配置於碟片馬達2之旋轉部上，具有 凸狀構造，該凸狀部分插入光碟之中心孔內而於其半徑方 向支撐夾持該光碟的鉗部；2a爲在上述碟片馬達2之旋 轉部上，與上述鉗部3配置爲同心圓狀，在該鉗部3插入 光碟之中心孔內之狀態下，支撐該光碟之中心孔周圍之平 面部（被記錄或再生之側的平面部）的碟片平面支撐部； Φ 5、6爲在裝置內部，覆蓋碟片馬達2、鉗部3、碟片平面 支撐部2 a等周圍較寬之範圍，空間性遮斷該範圍中光碟 片平面部與裝置零件•機構的內部蓋構件；7爲光碟裝置 1之前面面板；8爲配置於上述鉗部3之上方，在光碟裝 置1表面側而覆蓋裝置的頂蓋構件；8 a爲頂蓋構件8外 側的平面部（外側平面部）；8 b爲在頂蓋構件8上，設 置於與上述鉗部3之相對位置的貫通孔；8 c爲設置於貫 通孔8b周圍的凹部；10爲在光碟裝置1之背面側，覆蓋 • 裝置的底蓋構件；11爲與底蓋構件10結合之作爲第1基 台的基底構件；12爲安裝有上述碟片馬達2、鉗部3、碟 片平面支撐部2a、光讀寫頭（未圖示）等之作爲第2基 台的單元機械底板構件。 又弟2圖中’ 71爲表面設置有螺絲（未圖示），藉 由該螺絲之旋轉而使光讀寫頭（未圖示）在光碟（未圖示 )之略半徑方向移動的導引螺旋構件；6 0爲旋轉驅動引 導螺旋構件71之傳送馬達；72、73，係導引該光讀寫頭 之移動的導引構件；3 1、3 2、3 3爲光碟從前面面板7側 -7- (4) .1269278 插入裝置內時，以及光碟從裝置內被排出至前面面板7側 時’進行該插入•排出動作所需之驅動力之傳導的桿； 3 1 a爲桿3 1之旋轉動作的支點構件；4 1、42、43爲碰觸 上述被插入之光碟之外周，進行該光碟之置中的滾輪；80 爲爲達；50爲對馬達80之驅動輸入進行開•關的開關； 21爲對桿32傳導馬達80之驅動力的傳導機構；22爲設 置在作爲上述第1基台之上述基底構件11側，在光碟之 ® 夾持時，以該光碟被插入裝置內定位置之狀態下，使上述 單元機械底板構件升降變位的升降機構；25、26爲上述 單元機械底板構件1 2之升降變位的支點。其他符號，係 與上述第1圖之情況相同。上述傳送馬達60、引導螺旋 構件71、導引構件72、73等因爲也設置在單元機械底板 構件12上，故藉由該單元機械底板構件12之上述升降動 作，與單元機械底板構件1 2 —同升降變位。傳導機構2 1 例如具備齒輪組而構成。又滾輪42，係設置在桿3 1上。 ® 上述第1圖及第2圖之構造中，光碟被插入裝置內而 被夾持時，上述升降機構22，會使作爲第2基台之上述 單元機械底板構件1 2上升，在光碟碰觸上述頂蓋構件8 之凹部8c中光碟之相對面的狀態下，上述鉗部3之前端 面會從該頂蓋構件8之貫通孔8b突出，在頂蓋構件8之 外側平面部8 a內，最少比碟片平面範圍內（重疊於碟片 平面範圍的區域）之平面部之高度位置更高。 上述光碟裝置1中，當光碟從前面面板7側之插入· 排出口（未圖示）插入裝置內，則使滾輪41、42、43以 -8 - (5) 1269278 滾輪4 1、4 2、4 3的順序來碰觸該光碟的外周，一邊使桿 31、32、33變位，一邊進行該光碟之置中，將該光碟定 位在與碟片馬達4之旋轉軸大略同心的位置。此時，滾輪 42係壓住光碟之外周，使桿3 1在支點構件3〗a上之支點 周圍於箭頭E的方向轉動。桿31當其箭頭e方向之旋轉 變位量到達特定變位量時，則使開關5 0爲0N狀態。藉 由則使開關5 0爲ON狀態，從驅動電路（未圖示）對馬 φ 達8 0供給特定的驅動輸入，使該馬達8 0旋轉。當該馬達 80旋轉，該旋轉驅動力會藉由傳導機構21傳導至桿32。 桿32則將該傳導力傳給升降機構22。升降機構22以該 被傳導之力來動作，壓下單元機械底板構件1 2之咬合部 等，而對該單元機械底板構件12供給支點25、26周圍的 轉動力，使該單元機械底板構件1 2轉動變位置頂蓋構件 9側（上升變位）。當該單元機械底板構件1 2上升變位 ，碟片馬達2、鉗部3、碟片平面支撐部2a也會一起上升 # 變位，凸狀之該鉗部3會插入光碟之中心孔；碟片平面支 撐部2 a，例如會成爲接觸光碟中心孔周圍平面部之一部 分的狀態。該狀態下，若更使單元機械底板構件1 2上升 變位，光碟會碰觸頂蓋構件8之凹部8 c之光碟側的相對 面，藉由來自該相對面之反作用力，使鉗部3幾乎完全進 入光碟之中心孔內，碟片平面支撐部2a也例如成爲以其 全周圍部分碰觸光碟中心孔周圍之平面部的狀態。藉此， 光碟會成爲由該鉗部3和該碟片平面支撐部2a所夾持的 狀態。該夾持狀態下，鉗部3之前端面會從該頂蓋構件8 -9 - (6) 1269278 之貫通孔8b突出，而成爲比頂蓋構件8之外側平面部8a 之碟片平面範圍內之平面部位置更高的位置。 上述夾持結束之後，上述升降機構22會依據馬達80 之驅動輸入，使單元機械底板構件1 2以與上述上升變位 之情況相反的方向轉動，而下降變位到支點25、26周圍 ，並使光碟從頂蓋構件8之凹部8c的光碟側相對面離開 ，下降變位至特定位置爲止。本實施方式中，在光碟下降 # 變位至該特定位置之狀態下，鉗部3之前端面，會變的比 碟片平面範圍內該頂蓋構件8之外側平面部的高度位置更 低。又該特定位置中，馬達80之驅動輸入爲OFF狀態， 光碟係藉由碟片馬達2而成爲爲了記錄或再生資訊的可旋 轉狀態。」 以下說明中所使用之光碟裝置1的構成要素，係使用 與上述第1圖、第2圖相同的符號。 第3圖，係在第1圖之光碟裝置1中，表示光碟被夾 #持時之狀態的圖。 第3圖中，100爲光碟，8Cl爲頂蓋構件8之凹部8c 中與光碟1 00側爲相反側的面（以下稱爲頂蓋構件8之凹 部8c的外側平面爲頂蓋構件8之凹部8c中光碟 1 〇〇側的相對面（以下稱爲頂蓋構件8之凹部8c的內側 平面）；85爲設置在前面面板7側之插入•排出口；箭 頭F】爲單元機械底板構件1 2在上升變位時的轉動方向； 箭頭F2爲單元機械底板構件1 2在下降變位時的轉動方向 ;h!爲比單元機械底板構件1 2之中心部更位於支點2 5、 -10- (7) 1269278 2 6側之頂蓋構件8之外部平面側8 a內之碟片平面 ，該平面部之高度位置與鉗部3之前端面之間的距 鉗部3之前端面從外側平面部8a的突出量）；h2 元機械底板構件1 2之中心部更位於支點25、26相 頂蓋構件8之外部平面側8 a內之碟片平面範圍內 面部之高度位置與鉗部3之前端面之間的距離（= 之前端面從外側平面部8a的突出量）（使h2> 1m ) # 單元機械底板構件12，會藉由升降機構22上 ，而光碟100會碰觸頂蓋構件8之凹部8c的內側耳 ，藉由來自該內側平面8c2之反作用力，使鉗部3 全進入光碟1 〇〇之中心孔內；碟片馬達2之旋轉部 片平面支撐部2a (第3圖中未圖示）也成爲例如 周圍部分碰觸光碟1 00之中心孔周圍平面部的狀態 光碟1 〇〇被夾持時，鉗部3之前端面會從頂蓋構件 通孔8b突出並超過外側平面8Cl的高度位置；更 • 成爲比該頂蓋構件8之外側平面部8a之碟片平面 之平面部高度位置更高1μ〜1ι2的位置。該構造係 少頂蓋構件8之高度尺寸，使該外側平面部8a之 置對鉗部3之前端面的高度位置更低，而實現之。 h!、h2成爲例如〇.5xlO_3m以下，則可使光碟裝置 體厚度尺寸成爲9.5xl(T3m以下。 第4圖，係將先前技術之吸入式光碟裝置中之 態，對比於上述第3圖之本發明構造而表示的圖。 圖之構造中，夾持光碟1 0 0時，使單元機械底板構 範圍內 離（= 爲比單 反側之 ，該平 鉗部3 〇 升變位 L 面 8 C2 幾乎完 上之碟 以其全 ，讓該 8之貫 且，會 範圍內 藉由減 局度位 例如使 1之整 夾持狀 該第4 件 12, -11 - (8) 1269278 在支點2 5 ’、2 6 ’周圍以箭頭F Γ方向轉動而上升變位，來 使光碟1〇〇碰觸頂蓋構件8’之凹部8c’的內側平面8c2’， 而成爲夾持狀態。該夾持狀態時，鉗部3 ’之前端面，會 從頂蓋構件8’之貫通孔8b’突出，而不從頂蓋構件8’之外 側平面8a’之碟片平面範圍內的平面部高度位置突出，而 成爲比該筒度位置更低gl〜g2的位置。該構造會妨礙頂 蓋構件8之高度尺寸減少化，而難以將裝置整體薄型化。 Φ 第4圖中，8 c ! ’爲頂蓋構件8 ’之凹部8 c ’之外側平面，8 b ’ 爲頂蓋構件8’上之貫通孔，1〇’爲底蓋構件，85,爲插入· 排出口，箭頭F2’爲使單元機械底板構件12’下降變位時 ，該單元機械底板構件12’在支點25’、26,周圍的轉動方 向。 如上述般’若依本發明之實施方式，即使在比頂蓋構 件8之平面部高度位置更低的狀態下，鉗部3之前端面之 高度亦可確保特定量，而可對光碟100進行特定之確實夾 Φ 持動作。結果，可將裝置更加薄型化。 另外上述實施方式雖然說明吸入式光碟裝置之情況， 但本發明並不限定於此。 如以上所說明般，若依本發明，則在確保光碟之夾持 的狀態下，可將光碟裝置更加薄型化。 【圖式簡單說明】 [第1圖]作爲本發明之一實施方式之光碟裝置的構造 例圖。 -12- (9) 1269278 [第2圖]第1圖之光碟裝置之內部構造的俯視圖。 [第3圖]第1圖之光碟裝置中，光碟之夾持的說明圖 〇 [第4圖]先前技術之光碟裝置中，光碟之夾持的說明 圖。 【主要元件符號說明】 1 :光碟裝置 2、 2 ’ ：碟片馬達 2a :碟片平面支撐部 3、 3 ’ ：鉗部 5、6 :內部蓋構件 7 :前面面板 8、8 ’ ：頂蓋構件 8a、8a’ ：外側平面部 8b、8b，：貫通孔 8 c、8 c，：凹部 1 〇、1 〇 ’ ：底蓋構件 1 1 :基底構件 12、12’ ：單元機械底板構件 21 :傳導機構 22 :升降機構 2 5、2 6 :升降變位之支點 31、 32、 33:桿 -13- (10) 12692781269278 (1) Description of the Invention [Technical Field] The present invention relates to an optical disk device for recording or reproducing information on an optical disk, and more particularly to a thinning technique thereof. [Prior Art] As described in the prior art of the present invention, for example, φ is described in Japanese Laid-Open Patent Publication No. 2002-352497 or Japanese Patent Application Publication No. 2004-39198. Japanese Laid-Open Patent Publication No. 2001-52497 discloses that as a small-sized and thin-sized disc device, the rotating table moves the disc surface against the side of the contact member provided on the upper casing by the moving mechanism. To the surface of the contact member, thereby inserting the disc holding mechanism into the center hole of the disc to maintain (clamp) the disc in a state of being placed on the rotary table; Japanese Patent Laid-Open No. 2004-3 In the chucking mechanism of the disc drive device, it is described that the disc rotating shaft portion including the rotary table can contact the φ disc, and the disc rotating shaft portion is brought close to the optical disc by the disc. The sheet is pressed against the pressing reaction force of the upper jaw to form a structure in which the disc is clamped to the rotary table. SUMMARY OF THE INVENTION The front end surface of the portion (clamp portion) of the above-mentioned prior art 'when the disc is clamped' inserted into the center hole of the disc is not at the height of the outer plane of the cover member (cover member) Protruding, but at a position lower than the height position, so that the end face of the disc center hole (-5) is inserted into the end face of the disc (2), and the height of the cover member is reduced as long as the height is not reduced. It is very difficult, and it is difficult to reduce the overall thickness of the device. Reducing the height of the front end surface of the portion (the pliers portion) into which the disc center hole is inserted is associated with the fact that the insertion operation is difficult or the like, which prevents the disc from being held. In view of the above-described prior art, the present invention is directed to, for example, a slot type (Slot in type, a form in which a disc as a recording medium is directly inserted into a device without using a tray or a cassette). In the mounting #, even if the height position of the flat portion of the top cover member is made low, the specific holding of the optical disc can be ensured, and the device can be made thinner. An object of the present invention is to provide a disc device having a device thickness of 9.5 x 1 or less (T3 cm or less). In order to solve the above problems, the present invention is directed to a disc device which is in contact with a disc when being held by a disc. In the state of the opposite surface of the top cover member, the front end surface of the protruding jaw portion inserted into the center hole of the optical disk protrudes from the through hole of the top cover member to become the top cover member in the plane of the disk. [Embodiment] The best mode for carrying out the invention will be described below with reference to the drawings. Fig. 1 to Fig. 3 are explanatory views of an embodiment of the present invention. FIG. 1 is a perspective view showing a configuration of a vacuum chuck device, and is a perspective view showing a state in which a top cover member is removed; and FIG. 2 is a plan view showing an internal structure of the optical disk device according to FIG. 1; Fig. 3 is an explanatory view of the holding of the optical disc in the optical disc device of Fig. 1. -6- (3) 1269278 In Fig. 1, 1 is a disc device; 2 is a disc for rotating a disc (not shown). Piece motor; 3 is configured The rotating portion of the disc motor 2 has a convex structure, and the convex portion is inserted into the center hole of the optical disc to support the jaw portion of the optical disc in the radial direction thereof; 2a is on the rotating portion of the disc motor 2 The disc portion 3 is disposed concentrically, and the disc portion 3 is inserted into the center hole of the optical disc to support the flat portion (the flat portion on the side to be recorded or reproduced) around the center hole of the optical disc. a plane supporting portion; Φ 5, 6 is a wide range around the inside of the device, covering the disc motor 2, the jaw portion 3, the disc plane supporting portion 2a, etc., spatially blocking the plane portion of the optical disc in the range and The inner cover member of the device component/mechanism; 7 is the front face panel of the optical disc device 1; 8 is a top cover member disposed above the above-mentioned jaw portion 3 to cover the device on the surface side of the optical disc device 1; 8 a is the top cover member 8 The outer flat portion (outer plane portion); 8 b is a through hole provided in the top cover member 8 at a position opposite to the jaw portion 3; 8 c is a recess provided around the through hole 8b; 10 is on the optical disc The back side of the device 1, covering the bottom cover of the device 11 is a base member as a first base coupled to the bottom cover member 10; 12 is mounted with the above-described disc motor 2, the jaw portion 3, the disc flat support portion 2a, and an optical pickup (not shown). The unit mechanical bottom plate member of the second base is also provided. In the figure 2, the surface of the 71 is provided with a screw (not shown), and the optical pickup (not shown) is placed on the optical disk by the rotation of the screw. a guide spiral member (not shown) that moves in a slightly radial direction; 60 is a transfer motor that rotationally drives the guide screw member 71; 72, 73 is a guide member that guides movement of the optical pickup; 3 1 , 3 2, 3 3 are the drives required to perform the insertion/discharge operation when the optical disc is inserted into the device from the front panel 7 side -7-(4) .1269278, and when the optical disc is ejected from the inside of the device to the front panel 7 side. a rod for conducting the force; 3 1 a is a fulcrum member for the rotation of the rod 3 1; 4 1 , 42 , 43 are rollers for touching the outer circumference of the inserted disc, and the roller is placed in the disc; 80 is 50 is a switch for turning on/off the drive input of the motor 80; 21 is a driving force for conducting the motor 80 to the rod 32 The conduction mechanism 22 is provided on the side of the base member 11 as the first base, and when the optical disk is inserted into the device at a position where the optical disk is inserted into the device, the unit mechanical floor member is moved up and down. The lifting mechanism; 25, 26 is a fulcrum of the lifting and lowering displacement of the unit mechanical bottom plate member 12 described above. The other symbols are the same as in the case of Fig. 1 described above. Since the conveying motor 60, the guiding spiral member 71, the guiding members 72, 73, and the like are also disposed on the unit mechanical bottom plate member 12, the above-described lifting operation of the unit mechanical bottom plate member 12 is combined with the unit mechanical bottom plate member 12 With the lifting position. The transmission mechanism 2 1 is configured to include, for example, a gear train. Further, a roller 42 is disposed on the rod 3 1. In the structures of the first and second figures described above, when the optical disk is inserted into the apparatus and clamped, the lifting mechanism 22 raises the unit mechanical bottom plate member 12 as the second base, and touches the optical disk. In a state in which the opposite surface of the optical disk is in the concave portion 8c of the top cover member 8, the front end surface of the jaw portion 3 protrudes from the through hole 8b of the top cover member 8, and is minimized in the outer flat portion 8a of the top cover member 8. It is higher than the height of the plane of the plane of the disc (the area overlapping the plane of the disc). In the above-described optical disc device 1, when the optical disc is inserted into the apparatus from the insertion/discharge port (not shown) on the side of the front panel 7, the rollers 41, 42, 43 are made -8 - (5) 1269278, and the rollers 4 1 and 4 2 are 2. In the order of 4 3, the outer circumference of the optical disk is touched, and while the rods 31, 32, and 33 are displaced, the optical disk is placed, and the optical disk is positioned at a position substantially concentric with the rotation axis of the disk motor 4. At this time, the roller 42 presses the outer circumference of the optical disk to rotate the lever 31 in the direction of the arrow E around the fulcrum on the fulcrum member 3a. When the rod 31 has a rotational displacement amount in the direction of the arrow e reaching a specific displacement amount, the switch 50 is brought to the ON state. By the switch 50 being turned on, a specific drive input is supplied from the drive circuit (not shown) to the horse φ 80, and the motor 80 is rotated. When the motor 80 rotates, the rotational driving force is transmitted to the rod 32 by the conduction mechanism 21. The rod 32 transmits the conduction force to the lifting mechanism 22. The elevating mechanism 22 is operated by the transmitted force, and the occlusal portion or the like of the unit mechanical bottom plate member 12 is pressed, and the rotational force of the fulcrum 25, 26 is supplied to the unit mechanical bottom plate member 12 so that the unit mechanical bottom plate member 1 is 2 Rotate the position of the top cover member 9 (upward displacement). When the unit mechanical bottom plate member 12 is up and down, the disc motor 2, the jaw portion 3, and the disc plane supporting portion 2a are also raised together by the # displacement, and the convex portion 3 is inserted into the center hole of the optical disc; The sheet plane supporting portion 2a is, for example, in a state of contacting a portion of the flat portion around the center hole of the optical disc. In this state, if the unit mechanical bottom plate member 12 is further moved up and down, the optical disk will touch the opposite side of the optical disk side of the concave portion 8c of the top cover member 8, and the jaw portion 3 is caused by the reaction force from the opposite surface. The disc plane supporting portion 2a is, for example, in a state in which the entire surface portion of the disc is in contact with the flat portion around the center hole of the optical disc. Thereby, the optical disk is in a state of being sandwiched by the jaw portion 3 and the disk plane supporting portion 2a. In the clamped state, the front end surface of the jaw portion 3 protrudes from the through hole 8b of the top cover member 8 -9 - (6) 1269278, and becomes wider than the plane of the disk of the outer flat portion 8a of the top cover member 8. The position of the plane is higher. After the clamping is completed, the lifting mechanism 22 rotates the unit mechanical bottom plate member 12 in a direction opposite to the above-mentioned ascending displacement according to the driving input of the motor 80, and descends to the periphery of the fulcrums 25 and 26, and The optical disc is separated from the opposite side of the optical disk side of the recessed portion 8c of the top cover member 8, and is displaced to a specific position. In the present embodiment, in the state where the disc descending # is displaced to the specific position, the front end surface of the jaw portion 3 becomes lower than the height position of the outer flat portion of the cap member 8 in the plane of the disc. Further, in the specific position, the drive input of the motor 80 is OFF, and the optical disk is rotated by the disk motor 2 for recording or reproducing information. The constituent elements of the optical disc device 1 used in the following description are the same as those in the above-described first and second drawings. Fig. 3 is a view showing a state in which the optical disk is held by the optical disk device 1 of Fig. 1. In Fig. 3, 100 is a disc, and 8Cl is a surface of the recess 8c of the top cover member 8 opposite to the side of the optical disc 100 (hereinafter, the outer plane of the recess 8c of the top cover member 8 is a recess of the top cover member 8 8c is the opposite side of the side of the optical disc 1 (hereinafter referred to as the inner side plane of the recess 8c of the top cover member 8); 85 is an insertion/discharge port provided on the side of the front panel 7; and arrow F is the unit mechanical bottom plate member 1 2 The direction of rotation when the displacement is up; the arrow F2 is the direction of rotation of the unit mechanical floor member 12 when it is displaced downward; h! is at the fulcrum 2 5, -10- (more than the center of the unit mechanical floor member 12) 7) 1269278 2 The disc plane in the outer plane side 8 a of the top cover member 8 on the side, the height position of the flat portion and the front end surface of the jaw portion 3 from the front end surface of the jaw portion 3 from the outer flat portion 8a The center portion of the h2 element mechanical bottom plate member 12 is located further between the height position of the face and the front end face of the jaw 3 in the plane of the disk in the outer plane side 8 a of the fulcrum 25, 26 phase cap member 8 Distance (= the amount of protrusion of the front end face from the outer flat portion 8a) (m2) The unit mechanical bottom plate member 12 is supported by the lifting mechanism 22, and the optical disc 100 will touch the inner ear of the concave portion 8c of the top cover member 8, and the forceps from the inner flat surface 8c2 will cause the clamp portion 3 to fully enter. In the center hole of the optical disc 1; the rotating flat surface supporting portion 2a (not shown in Fig. 3) of the disc motor 2 also becomes a state in which the peripheral portion touches the flat portion around the center hole of the optical disc 100. When the crucible is clamped, the front end surface of the jaw portion 3 protrudes from the top cover member through hole 8b and exceeds the height position of the outer flat surface 8C1; more than becomes a plane of the disc plane of the outer flat portion 8a of the top cover member 8. The height of the part is higher by 1μ~1ι2. This configuration is achieved by reducing the height dimension of the top cover member 8 such that the outer flat portion 8a is positioned lower than the height of the front end face of the jaw portion 3. When h! and h2 are, for example, 〇5×10_3 m or less, the thickness of the optical disk device body can be made 9.5×1 (T3 m or less. Fig. 4 is a view showing the state of the prior art suction type optical disk device, compared with the above FIG. The figure shows the structure of the present invention. In the structure of the figure, when the optical disk is clamped 100, the mechanical bottom plate of the unit is separated (= is smaller than the single-reverse side, and the flat-clamp part 3 is up-shifted by the L-face 8 C2 Almost complete the disc with its full, let the 8 and the range of the reduction by the degree of the position, for example, the 1st grip of the 4th piece 12, -11 - (8) 1269278 at the fulcrum 2 5 ', 2 6 ' is rotated in the direction of the arrow F 而 to move up and down, so that the optical disk 1 〇〇 touches the inner plane 8c2 ′ of the concave portion 8 c ′ of the top cover member 8 ′, and becomes a nip state. When the front end face of the jaw portion 3' protrudes from the through hole 8b' of the top cover member 8', without protruding from the height of the plane portion in the plane of the disk plane of the outer side surface 8a' of the top cover member 8', It becomes a position lower than the degree of the cylinder by gl~g2. This configuration hinders the height of the top cover member 8. It is difficult to reduce the thickness of the device as a whole. Φ In Fig. 4, 8 c ! ' is the outer surface of the recess 8 c ' of the top cover member 8 ', and 8 b ' is the through hole in the top cover member 8'. 1〇' is a bottom cover member, 85 is an insertion/discharge port, and arrow F2' is a rotation direction of the unit mechanical bottom plate member 12' at the fulcrums 25', 26 when the unit mechanical floor member 12' is lowered and displaced. As described above, according to the embodiment of the present invention, even in a state lower than the height position of the plane portion of the top cover member 8, the height of the front end surface of the jaw portion 3 can be secured to a certain amount, and the optical disc 100 can be performed. The specific clamping action is Φ. As a result, the device can be made thinner. The above embodiment describes the case of the suction type optical disk device, but the present invention is not limited thereto. As described above, according to the present invention, In the state in which the optical disk is held, the optical disk device can be made thinner. [Brief Description] FIG. 1 is a view showing an example of the structure of an optical disk device according to an embodiment of the present invention. -12- (9) 1269278 [Fig. 2] Figure 1 A plan view of the internal structure of the optical disc device. Fig. 3 is an explanatory view of the holding of the optical disc in the optical disc device of Fig. 1 [Fig. 4] an explanatory view of the holding of the optical disc in the optical disc device of the prior art. [Description of main component symbols] 1 : Optical disc device 2, 2 ': Disc motor 2a: Disc flat support portion 3, 3': Clamp portion 5, 6: Inner cover member 7: Front panel 8, 8': Top cover Members 8a, 8a': outer flat portions 8b, 8b, through holes 8c, 8c, recesses 1 〇, 1 〇': bottom cover member 1 1 : base members 12, 12': unit mechanical bottom plate member 21: Conduction mechanism 22: lifting mechanism 2 5, 2 6 : fulcrum of lifting displacement 31, 32, 33: rod-13- (10) 1269278
3 1 a :支 4 卜 42、 5 0 :開闇 6 0 :傳每 71 :引 _ 72 、 73 : 8 0 :馬 | 100 ：光 點構件 4 3 :滾輪 03 1 a : branch 4 Bu 42 , 5 0 : open dark 6 0 : pass every 71 : lead _ 72 , 73 : 8 0 : horse | 100 : light point member 4 3 : wheel 0
I馬達 ί螺旋構件 導引構件 I 碟I motor ί spiral member guiding member I
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